Efficiency Ratings: Elon

Using an NBA Efficiency Rating Formula, TDD tracks the best statistical performances of the season

A quick way NBA coaches measure a player's game performance is by evaluating his efficiency. In order to find a player's efficiency the following formula is used:

((Points + Rebounds + Assists + Steals + Blocks) - ((Field Goals Att. - Field Goals Made) + (Free Throws Att. - Free Throws Made) + Turnovers)).

For example, compare the following stat lines:

Player A: 17 points (5-of-22 FG, 7-9 FT), 8 rebounds, 6 assists, 3 steals, 4 turnovers.

Player B: 15 points (5-8 FG, 3-4 FT), 4 rebounds, 7 assists, 2 turnovers

Who had the better game? Using the above referenced formula player B, who hit five of eight shots and committed two turnovers registered a +20 efficiency total while Player A who missed 17 shots and had four turnovers had just a +11 rating.


Jahlil Okafor had a season-high 25 points and set a school freshman record with 20 rebounds in the Blue Devils' 75-62 victory over Elon on Monday night.

Amile Jefferson added 13 points on 6-of-7 shooting and Justise Winslow had 12 points for Duke (9-0).

Okafor had Duke's first 20-rebound game since Elton Brand in 1998 but Mike Krzyzewski said his big numbers didn't make this performance any more palatable from a team playing its first game in 12 days.

The Blue Devils never trailed and led by 20. But they also finished with a season-worst 17 turnovers, made just 14 of 27 free throws and were just 3 of 16 from 3-point range.

"This is the worst we've felt all year after a win," Okafor said.

Luke Eddy finished with 16 points to lead Elon (5-5), which shot 42 percent to keep the final margin respectable.

vs. ELON

(change from previous game)

Notes: It starts with Okafor’s monster game which was the highest score since we began keeping these ratings five seasons ago. The Duke center had little competition on the boards and for a while the Duke offense could (and did) throw up anything towards the rim to allow the big man to go get it. That may not make for a happy practice session in the hours following the game, but it did allow for a super efficient night from the prized freshman.

Similarly, there was no answer for Amile Jefferson’s length or rebounding from Elon either. The junior was efficient from the field, missing just one shot, and hauled in five rebounds to finish with a respectable night. Both Okafor and Jefferson could have been even better had they not combined to shoot just 6-of-14 from the charity stripe. They weren’t the only ones who struggled though as the rest of the team shot just 8-of-13.

Turnovers were also a major point of contention for Duke on Monday as the Blue Devils committed a season high 17. In the follow up to his masterful game against Wisconsin, freshman point guard Tyus Jones had his least efficient outing of the season by taking one shot (missed) from the field and committing as many turnovers as assists.


Throughout the season TDD will track the various highs and lows using the formula.

Ten Most Efficient Performances

  • Jahlil Okafor v. Elon (+37)
  • Jahlil Okafor v. Furman (+32)
  • Amile Jefferson v. Furman (+30)
  • Jahlil Okafor v. Presbyterian (+28)
  • Tyus Jones v. Army (+27)
  • Tyus Jones v. Wisconsin (+25)
  • Quinn Cook v. Michigan St (+24)
  • Tyus Jones v. Michigan St (+22)
  • Jahlil Okafor v. Fairfield (+22)
  • Grayson Allen v. Presbyterian (+22)

Five Least Efficient Performances*

  • Rasheed Sulaimon (-4) v. Temple
  • Matt Jones (-2) v. Elon
  • Marshall Plumlee (+0) v. Michigan St
  • Rasheed Sulaimon (+0) v. Michigan St
  • Grayson Allen (+1) v. Elon


Cumulative Season ratings for the Blue Devils. (E/game)*
  • Jahlil Okafor +205 (22.7)
  • Quinn Cook +144 (16.0)
  • Amile Jefferson +142 (15.8)
  • Tyus Jones +131 (14.6)
  • Justise Winslow +101 (11.2)
  • Marshall Plumlee +67 (7.4)
  • Rasheed Sulaimon +75 (8.3)
  • Matt Jones +57 (6.3)
  • Grayson Allen +42 (6.0)*

*- Games Factored In: Allen (7)


Cumulative Season ratings per minute for the Blue Devils. (E/minutes)
  • Jahlil Okafor: 0.823
  • Amile Jefferson: 0.686
  • Marshall Plumlee: 0.684
  • Grayson Allen: 0.609
  • Quinn Cook: 0.512
  • Tyus Jones: 0.526
  • Rasheed Sulaimon: 0.434
  • Justise Winslow: 0.432
  • Matt Jones: 0.348


Tracking the most and least efficient performances by player
  • Jahlil Okafor 37 / 13
  • Amile Jefferson 30 / 7
  • Quinn Cook 24 / 7
  • Tyus Jones 27 / 3
  • Grayson Allen 22 / 0
  • Rasheed Sulaimon 20 / -4
  • Justise Winslow 21 / 5
  • Marshall Plumlee 17 / 1
  • Matt Jones 16 / -2


- The front court continues to separate itself from the wing and backcourt when it comes to being efficient. The top three per minute scores are the top three post players for the team, as are the top two individual games of the season. The cumulative totals do have Cook above Jefferson, but the power forward has closed the gap tremendously over the last four games and now trails his fellow captain by just two points.

- Speaking of Cook, the game against Elon was his least efficient of the season. By 5 points.

- Semi Ojeleye has been removed from the season rankigs after he decided to transfer this week.

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